Speaker: Darrell Long
UC Santa Cruz
Monday, February 26, 2007
11:00 am - 12:00 pm
EBU3b 1202

ABSTRACT
We have developed Ceph, a distributed file system that provides excellent performance, reliability, and scalability. Ceph maximizes the separation between data and metadata management by replacing allocation tables with a pseudo-random data distribution function (CRUSH) designed for heterogeneous and dynamic clusters of unreliable object storage devices (OSDs). We leverage device intelligence by distributing data replication, failure detection and recovery to semi-autonomous OSDs running a specialized local object file system.

A dynamic distributed metadata cluster provides extremely efficient metadata management and seamlessly adapts to a wide range of general purpose and scientific computing file system workloads. Performance measurements under a variety of workloads show that Ceph has excellent I/O performance and scalable metadata management, supporting more than 250,000 metadata operations per second.

BIO
Dr. Darrell D. E. Long is Professor of Computer Science and Kumar Malavalli Endowed Professor of Storage Systems Research at the University of California, Santa Cruz, Associate Dean for Research and Graduate Studies and Director of the Storage Systems Research Center in the Jack Baskin School of Engineering. He received his B.S. degree in Computer Science from San Diego State University in 1984, and his M.S. and Ph.D. degrees in Computer Science and Engineering from the University of California, San Diego in 1986 and 1988 respectively. His advisor was Prof. Jehan-Francois Paris. He has broad research interests in the area of computing systems including high performance storage systems, operating systems, distributed systems, fault tolerance and reliability, performance evaluation and mobile computing.